87 lines
2.9 KiB
C++
Executable File
87 lines
2.9 KiB
C++
Executable File
//-----------------------------------------------------------------------------
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// Torque Game Engine
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// Copyright (C) GarageGames.com, Inc.
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//-----------------------------------------------------------------------------
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#include "core/iTickable.h"
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// The statics
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U32 ITickable::smLastTick = 0;
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U32 ITickable::smLastTime = 0;
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U32 ITickable::smLastDelta = 0;
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const F32 ITickable::smTickSec = ( F32( ITickable::smTickMs ) / 1000.f );
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const U32 ITickable::smTickShift = 5;
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const U32 ITickable::smTickMs = ( 1 << smTickShift );
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const U32 ITickable::smTickMask = ( smTickMs - 1 );
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//------------------------------------------------------------------------------
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ITickable::ITickable()
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{
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getProcessList().push_back( this );
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}
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//------------------------------------------------------------------------------
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ITickable::~ITickable()
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{
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for( ProcessListIterator i = getProcessList().begin(); i != getProcessList().end(); i++ )
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{
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if( (*i) == this )
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{
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getProcessList().erase( i );
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return;
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}
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}
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}
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//------------------------------------------------------------------------------
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Vector<ITickable *>& ITickable::getProcessList()
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{
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// This helps to avoid the static initialization order fiasco
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static Vector<ITickable *> smProcessList; ///< List of tick controls
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return smProcessList;
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}
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//------------------------------------------------------------------------------
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bool ITickable::advanceTime( U32 timeDelta )
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{
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U32 targetTime = smLastTime + timeDelta;
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U32 targetTick = ( targetTime + smTickMask ) & ~smTickMask;
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U32 tickCount = ( targetTick - smLastTick ) >> smTickShift;
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// If we are going to send a tick, call interpolateTick(0) so that the objects
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// will reset back to their position at the last full tick
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if( smLastDelta && tickCount )
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for( ProcessListIterator i = getProcessList().begin(); i != getProcessList().end(); i++ )
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if( (*i)->isProcessingTicks() )
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(*i)->interpolateTick( 0.f );
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// Advance objects
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if( tickCount )
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for( ; smLastTick != targetTick; smLastTick += smTickMs )
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for( ProcessListIterator i = getProcessList().begin(); i != getProcessList().end(); i++ )
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if( (*i)->isProcessingTicks() )
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(*i)->processTick();
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smLastDelta = ( smTickMs - ( targetTime & smTickMask ) ) & smTickMask;
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F32 dt = smLastDelta / F32( smTickMs );
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// Now interpolate objects that want ticks
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for( ProcessListIterator i = getProcessList().begin(); i != getProcessList().end(); i++ )
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if( (*i)->isProcessingTicks() )
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(*i)->interpolateTick( dt );
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// Inform ALL objects that time was advanced
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dt = F32( timeDelta ) / 1000.f;
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for( ProcessListIterator i = getProcessList().begin(); i != getProcessList().end(); i++ )
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(*i)->advanceTime( dt );
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smLastTime = targetTime;
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return tickCount != 0;
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} |